Fruit tree plantation (7)
'fruit tree plantation' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for orchard that I've seen before include "Enormous" , "Place of fruit trees" , "Plantation of fruit trees" , "Field for growing fruit" , "Source of fruit" .)
(Other definitions for orangery that I've seen before include "where mandarins thrive" , "where fruit trees grow" , "Plant-house" , "Building for growing fruit from warmer climes" , "tree house?" .)